GetvCard.com is a contact exchange service I put together with a friend back before the Internet was popular. You could edit a business card online and then share it via a small link that would download a vCard file that would import your details magically. We even figured out how to hack the format to kind-of-sort-of work with Outlook of that era. I haven't had time to work on the site for ages and while it still has a few dedicated fans there aren't enough regular users to justify the maintenance. As of today it's no longer possible to create a new account. The plug will be pulled entirely at the end of the year.
If you're looking for a similar service you could try about.me, although they seem to be turning into a social network rather than just a way to share your contact information. You could also try Carddrop. I'm sure there are other options as well.
When the site goes all existing contact information will be deleted, so if you need to save any details or redirect contact links please do so by the end of the year. If you need help leave a comment below.